The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2004
Filed:
Apr. 18, 2002
Akifumi Nomura, Saitama, JP;
Yasuo Shimura, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A crankshaft support structure for an engine. An inner race forming a part of a main bearing is loosely fitted onto a bearing seat of a shaft. A direction of thrust is fixed by a flange of a timing sprocket which is press-fitted onto the shaft. The outer diameter R of the timing sprocket and the outer diameter R of the flange are respectively set so that they are smaller than the outer diameter R of the inner race. An outer race of the main bearing is press-fitted and fixed to the side of a left crankcase and a roller is integrated. When the shaft enters the inside of the roller, the timing sprocket and the flange pass through the inside of the roller, and the inner race is fitted to the roller. As a result, the inner diameter R of the inner race can be made smaller than the outer diameter R of the timing sprocket. Thus the main bearing supporting the crankshaft is miniaturized and lightened.